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Determination of ( E )‐5‐methylhept‐2‐en‐4‐one in deodorised hazelnut oil. Application to the detection of adulterated olive oils
Author(s) -
Blanch Gracia P,
Caja M Mar,
León Manuel,
Herraiz Marta
Publication year - 2000
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/(sici)1097-0010(20000101)80:1<140::aid-jsfa496>3.0.co;2-f
Subject(s) - olive oil , chromatography , distillation , edible oil , chemistry , oil analysis , extraction (chemistry) , solvent extraction , pulp and paper industry , stripping (fiber) , gas chromatography , food science , materials science , engineering , metallurgy , composite material
The presence of ( E )‐5‐methylhept‐2‐en‐4‐one (filbertone) in a hazelnut oil, deodorised in a laboratory system using nitrogen as stripping gas, is studied regarding its usefulness as a chiral marker for detecting adulterations of olive oil. The analytical method involves the use of both simultaneous distillation–solvent extraction as a sample concentration step and a chiral stationary phase in the subsequent gas chromatographic analysis. The procedure is simple, rapid, effective for detecting adulterations of olive oil with hazelnut oil and can reduce falsely negative results obtained if conventional parameters included in current regulations are exclusively considered when establishing purity in olive oils. © 2000 Society of Chemical Industry